three.js tests¶

version()

var('x y z a b')
E1 = x^2 + y^2 + z^2 - a^2 == 0
E2 = x^2 + y^2 - b^2*z^2 == 0
P1 = implicit_plot3d(E1.lhs().subs([a==2]),(x, -2, 2), (y, -2, 2), (z, -2, 2),
                     color="blue", opacity=0.5)
P2 = implicit_plot3d(E2.lhs().subs([b==1]),(x, -2, 2), (y, -2, 2), (z, -2, 2),
                     color="yellow", opacity=0.5)
P1 + P2